I remember carrying one of these around at Clinton Collegiate Institute until my shoulder got sore. There were no bolts for these (that I saw). We had #4 mk 7's for target practice and a Bren (not DP marked) and a hand grenade to assemble & disassemble. Probably long gone through the smelter by now (sigh). I don't have the good number on my PAL for the Bren, but I would love to have the Mk 7 to go with my Long Branch #4 Mk1*.
The one in the EE right now with chest and all is a beauty, but more than I want to spend.
Are you guys still talking the Cooey 82 or did you switch to something else?
Your rifle looks really good. The finish doesn't appear too shiny in the photos, but raw linseed oil was what was used by military. As long as it doesn't have varnish or shellac on it, you could just apply linseed oil over the finish. try a little dab and see if it just sits on top. If not, you are good to go. I confess that I have used boiled linseed oil, or tung oil, which dry quicker, but the purists may object.